Delivery mechanism for weighing-machines.



E. S. KNEELAND. DELIVERY MECHANISM FOR WEIGHING MACHINES. APPLICATION FILED JUNE 19, 1912.

1,080,514. Patented Dec. 2. 1913.

WITNESSES: INVENTOR.

COLUMBIA I'LANUGRAI'H cu, wasmunfom n cy W11 il? ERNEST S. KNEELAND, OF MALDEN, MASSACHUSETTS.

DELIVERY MECHANISIII FOR WEIGHING-MAGI-IINES.

To all whom it may concern:

Be it known that I, ERNEST S. KNEELAND, a citizen of the United States, residing at Maiden, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Dclivery Mechanisms for l/Veighingdlachines, of which the following is a specification.

My invention relates to delivery mechanisms for weighing machines and the like and it has for its object to provide an improved mechanism of this kind by the use of which the material being handled can be delivered rapidly and accurately into the bags or other containers in which it is packed.

The invention consists of a delivery mechanism of the class described comprising a receiver into which measured or weighed quantities of material are intermittently discharged, said receiver being made with an outlet at its lower end provided with a door that is normally held closed against the pressure of the material within the receiver by a door-supporting prop movably mounted on any suitable fixture which may be, as herein shown, the receiver itself. Adjacent to this door-supporting prop is arranged a movable container-support which, when shifted, from its normal position, operates the prop in a manner to unlock or free the door and permit the latter to be opened by the pressure thereon of the contents of the receiver, said container-support being" arranged to position the container to receive the material discharged from the receiver when the door is unlocked.

Other features of my invention are hereinafter pointed out.

In the accompanying drawings :F;igure 1 is a front elevation of part of a weighing machine embodying one form of my invention. Fig. 2 shows the delivery mechanism of Fig. 1 in its open condition. Fig. 3 is a side view of the delivery mechanism shown in Fig. 1.

Having reference to the drawings 1, 1 represent standards which support a platform 2. On the platform 2 is a hopper 3 provided with valves 4, 4: that are connected, as indicated at 5, with a lever G fulcrumed upon an upright 7. The grain or other material is delivered into the receiver 8 from Specification of Letters Patent.

Application filed June 19. 1912.

Patented Dec. 2, 1913.

Serial No. 704,610.

hopper 3 and is retained therein by a door 9 which normally closes the lower outlet end of the receiver. The door 9 is pivoted at 11 to receiver 8 and is made at each side with an upwardly extending wing 1.0 so that when opened as described later and as shown in Fig. 2 it will constitute a chute to direct the material into the bag or other container. Door 9 is normally supported and, locked in its closed position against the pressure of the material within the receiver 8 by two toggle props each comprising a lever 13 and link 15 pivotally connected together at 20. The levers 13 are pivotally connected at their upper ends to the door 9 while the links 15 are pivotally connected at their lower ends to brackets or arms 12 projecting from receiver 8. At their lower ends the levers 13 are connected by a bar 21 carrying a counterweight 1 1.

Immediately below the toggle props is arranged a container-support herein shown as comprising two arms 16 pivotally connected by means of a rod 18 to two of the uprights 1. The arms 16 are normally supported in the position shown by chains or the like 22 connected at their lower ends with the arms 16 and at their upper ends with two of the uprights 1.

The arms 16 carry two cross bars 17 and 19, the former normally occupying a position immediately below the middle pivots 20 of the toggles, and the latter adapted to have one side of a bag appliedv thereto and held fast to the same by one hand of the operator while the opposite side of the bag is supported. by the other hand of the operator so that the mouth of the bag will occupy the proper position with relation to the door 9 when the latter is opened. After the operator has placed a bag in position as described he swings the arms 16 upward slightly far enough. to cause the bar 17 to contact with and shift the pivot 20 above and out of line with the pivots at the ends of the toggle props connected with the sides 10 whereupon the pressure upon the door 9 of the material within receiver 8 completes the opening movement of the door, swinging it down into the position shown in Fig. 2 where it serves as a chute to direct the material into the bag. W'hen the receiver 8 is emptied of its contents the weight 14 acts to swing door 9 back into its closed position again. The receiver 8 is then reloaded from hopper 3.

When door 9 is swung into its closed position the bar 17 serves as a stop to limit the door-closing movement of the toggle props.

l/Vhat I claim is:

1. The combination with the receiver having an outlet near its lower end, of a movably; supported door for controlling said outlet; a movably supported prop for holding said door in its closed position against the pressure of the contents of the receiver, and a movable container-support arranged to position the container relatively to the discharge from the receiver and adapted when shifted to operate the prop and tree the door.

2. The combination with the receiver having an outlet near its lower end, of a movably supported door for controlling said outlet; a movably supported prop for holding said door in its closed position against the pressure of the contents of the receiver; a movable container support arranged to position the container relatively to the discharge from the receiver and adapted when shifted to operate the prop and free the door, and means for automatically closing the door and restoring the prop to its operative position when the receiver is emptied of its contents.

3. .The combination with the receiver having an outlet near its lower end, of a pivoted door for controlling said outlet; a toggle prop for holding said door in its closed position against the pressure of the contents of the receiver, said toggle-prop being pivot- I ally connected at one end to the door; means pivotally supporting the opposite end of the toggle-prop; and a movable container-support for positioning the container so as to receive the material discharged from the receiver, said container-support being adapted when shifted to operate the toggle-prop to free the door.

4. The combination with the receiver having an outlet near its lower end, of a door pivotally mounted on said receiver in position to control said outlet; a toggle-prop for holding said door in its closed position against the pressure of the contents of the receiver, said toggle-prop being pivotally connected at one end to the door and at its opposite end to the receiver, and a movable containensupport for positioning the container so as to receive the material discharged from the receiver, said containersupport being adapted when shifted to operate the toggle-prop to free the door.

5. The combination with the receiver having an outlet near its lower end, of a pivoted door for controlling said out-let; a toggleprop for holding said door in its closed position against the pressure of the contents of the receiver, said toggle-prop being pivotally connected at one end to the door; means pivotally supporting the opposite end of the toggle-prop; a movable container-support for positioning the container so as to re ceive the materialdischarged from the receiver, said container support being adapted when shifted to operate the toggle-prop to free the door, to permit the latter to be opened by the pressure of the contents of the receiver, and a weight for closing the door and restoring the toggle-prop to its operative position after the discharge of the contents of the receiver.

In witness whereof I have affixed my signature, in the presence of two witnesses.

ERNEST S. KNEELAND.

Witnesses: V

C. E. KNEELAND, H. E. Girronn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, D. C. 

